1/*
2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24#include "precompiled.hpp"
25#include "classfile/systemDictionary.hpp"
26#include "gc/shared/collectedHeap.hpp"
27#include "gc/shared/oopStorage.inline.hpp"
28#include "jvmci/jvmci.hpp"
29#include "jvmci/jvmciJavaClasses.hpp"
30#include "jvmci/jvmciRuntime.hpp"
31#include "jvmci/metadataHandleBlock.hpp"
32#include "memory/universe.hpp"
33
34OopStorage* JVMCI::_object_handles = NULL;
35MetadataHandleBlock* JVMCI::_metadata_handles = NULL;
36JVMCIRuntime* JVMCI::_compiler_runtime = NULL;
37JVMCIRuntime* JVMCI::_java_runtime = NULL;
38
39bool JVMCI::can_initialize_JVMCI() {
40 // Initializing JVMCI requires the module system to be initialized past phase 3.
41 // The JVMCI API itself isn't available until phase 2 and ServiceLoader (which
42 // JVMCI initialization requires) isn't usable until after phase 3. Testing
43 // whether the system loader is initialized satisfies all these invariants.
44 if (SystemDictionary::java_system_loader() == NULL) {
45 return false;
46 }
47 assert(Universe::is_module_initialized(), "must be");
48 return true;
49}
50
51void JVMCI::initialize_compiler(TRAPS) {
52 if (JVMCILibDumpJNIConfig) {
53 JNIJVMCI::initialize_ids(NULL);
54 ShouldNotReachHere();
55 }
56
57 JVMCI::compiler_runtime()->call_getCompiler(CHECK);
58}
59
60void JVMCI::initialize_globals() {
61 _object_handles = new OopStorage("JVMCI Global Oop Handles",
62 JVMCIGlobalAlloc_lock,
63 JVMCIGlobalActive_lock);
64 _metadata_handles = MetadataHandleBlock::allocate_block();
65 if (UseJVMCINativeLibrary) {
66 // There are two runtimes.
67 _compiler_runtime = new JVMCIRuntime();
68 _java_runtime = new JVMCIRuntime();
69 } else {
70 // There is only a single runtime
71 _java_runtime = _compiler_runtime = new JVMCIRuntime();
72 }
73}
74
75OopStorage* JVMCI::object_handles() {
76 assert(_object_handles != NULL, "Uninitialized");
77 return _object_handles;
78}
79
80jobject JVMCI::make_global(const Handle& obj) {
81 assert(!Universe::heap()->is_gc_active(), "can't extend the root set during GC");
82 assert(oopDesc::is_oop(obj()), "not an oop");
83 oop* ptr = object_handles()->allocate();
84 jobject res = NULL;
85 if (ptr != NULL) {
86 assert(*ptr == NULL, "invariant");
87 NativeAccess<>::oop_store(ptr, obj());
88 res = reinterpret_cast<jobject>(ptr);
89 } else {
90 vm_exit_out_of_memory(sizeof(oop), OOM_MALLOC_ERROR,
91 "Cannot create JVMCI oop handle");
92 }
93 return res;
94}
95
96bool JVMCI::is_global_handle(jobject handle) {
97 const oop* ptr = reinterpret_cast<oop*>(handle);
98 return object_handles()->allocation_status(ptr) == OopStorage::ALLOCATED_ENTRY;
99}
100
101jmetadata JVMCI::allocate_handle(const methodHandle& handle) {
102 assert(_metadata_handles != NULL, "uninitialized");
103 MutexLocker ml(JVMCI_lock);
104 return _metadata_handles->allocate_handle(handle);
105}
106
107jmetadata JVMCI::allocate_handle(const constantPoolHandle& handle) {
108 assert(_metadata_handles != NULL, "uninitialized");
109 MutexLocker ml(JVMCI_lock);
110 return _metadata_handles->allocate_handle(handle);
111}
112
113void JVMCI::release_handle(jmetadata handle) {
114 MutexLocker ml(JVMCI_lock);
115 _metadata_handles->chain_free_list(handle);
116}
117
118void JVMCI::oops_do(OopClosure* f) {
119 if (_object_handles != NULL) {
120 _object_handles->oops_do(f);
121 }
122}
123
124void JVMCI::metadata_do(void f(Metadata*)) {
125 if (_metadata_handles != NULL) {
126 _metadata_handles->metadata_do(f);
127 }
128}
129
130void JVMCI::do_unloading(bool unloading_occurred) {
131 if (_metadata_handles != NULL && unloading_occurred) {
132 _metadata_handles->do_unloading();
133 }
134}
135
136bool JVMCI::is_compiler_initialized() {
137 return compiler_runtime()->is_HotSpotJVMCIRuntime_initialized();
138}
139
140void JVMCI::shutdown() {
141 if (compiler_runtime() != NULL) {
142 compiler_runtime()->shutdown();
143 }
144}
145
146bool JVMCI::shutdown_called() {
147 if (compiler_runtime() != NULL) {
148 return compiler_runtime()->shutdown_called();
149 }
150 return false;
151}
152